You couldn't get more updates in tracking system after the status of 'Guangzhou has been exported to open'. It's always the last status China Post provides for packets with tracking number number consisting of 11 digits only. It's China Post Ordinary Small Packet, a cheap and slow service of China Post. As it's not registered, the tracking service is not provided. So, don't expect more status after that.

It usually takes a very long time for this kind of packet to reach the destination country, two or three months in most cases. Wait Patiently.